A process for incorporating a long persistent phosphor into a fabric
material which occurs by firing a phosphor within a crucible, then
grinding the resulting aggregate into a phosphor particulate of specified
size, encapsulating the phosphor particulate within a water impervious
coating material and then applying a specified ratio by weight of the
encapsulated phosphor particulates into the fabric material. Further, a
fibrous product is described incorporating encapsulated long persistent
phosphor particles.